<template>
	<div class="box">
		<div class="number">98.9%</div>
		<div class="contrast">
			<div class="bubble"></div>
			<div class="bubble"></div>
			<div class="bubble"></div>
			<div class="bubble"></div>
			<div class="bubble"></div>
			<div class="bubble-home"></div>
			<div class="circle"></div>
		</div>
	</div>
</template>

<script></script>

<style>
.box {
	width: 100%;
	height: 100%;
	margin: 0 auto;
	/* 相对定位 */
	position: relative;
}

/* 充电百分百的文字 */
.number {
	color: #000;
	position: absolute;
	z-index: 1;
	width: 200px;
	height: 200px;
	line-height: 200px;
	text-align: center;
	font-size: 30px;
	top: 25%;
	left: 50%;
	margin-left: -100px;
}

/* 泡泡 */
.contrast {
	width: 100%;
	height: 100%;
	background-color: #fff;
	position: relative;
	/* 设置对比度 */
	filter: contrast(15);

	/* 动画 */
	animation: hueRotate 5s linear infinite;
}

@keyframes hueRotate {
	0% {
		/*contrast是设置对比度  huerotate是设置颜色滤镜 通过设置度数来改变颜色  */
		filter: contrast(15) hue-rotate(0);
	}

	100% {
		filter: contrast(15) hue-rotate(360deg);
	}
}

.circle {
	width: 300px;
	height: 300px;
	position: absolute;
	top: 20%;
	left: 50%;
	margin-left: -150px;
	/* 设置模糊度，配合上面的 contrast 可以产生粘滞的效果*/
	filter: blur(8px);

	animation: circleRotate 5s linear infinite;
}

.circle::before {
	content: '';
	width: 200px;
	height: 200px;
	background-color: cyan;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	border-radius: 42% 38% 63% 49% / 45%;
}

/* 中心圈的黑色 */
.circle::after {
	content: '';
	width: 175px;
	height: 175px;
	background-color: #f2f2f2;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	border-radius: 50%;
}

/* 圆的旋转动画 */
@keyframes circleRotate {
	0% {
		transform: rotate(0);
	}
	100% {
		transform: rotate(360deg);
	}
}
/* 下面泡泡群 */
.bubble-home {
	width: 100px;
	height: 40px;
	background-color: cyan;
	position: absolute;
	left: 50%;
	bottom: 0;
	margin-left: -50px;
	border-radius: 100px 100px 0 0;
	/* 模糊 */
	filter: blur(8px);
}

.bubble {
	width: 20px;
	height: 20px;
	background: cyan;
	border-radius: 100%;
	position: absolute;
	left: 50%;
	bottom: 0;
	transform: translateX(-50%);
	z-index: 2;
	filter: blur(5px);
	/* 动画 */
	animation: bubbleUp 5s ease-in-out infinite;
}

.bubble:nth-child(1) {
	width: 20px;
	height: 20px;
	left: 50%;
	animation-duration: 5s;
	animation-delay: 1s;
}

.bubble:nth-child(2) {
	width: 22px;
	height: 22px;
	left: 49%;
	animation-duration: 4s;
	animation-delay: 2s;
}

.bubble:nth-child(3) {
	width: 24px;
	height: 24px;
	left: 47%;
	animation-duration: 3s;
	animation-delay: 3s;
}

.bubble:nth-child(4) {
	width: 18px;
	height: 18px;
	left: 53%;
	animation-duration: 3s;
	animation-delay: 4s;
}

.bubble:nth-child(5) {
	width: 26px;
	height: 26px;
	left: 51%;
	animation-duration: 4s;
	animation-delay: 5s;
}

@keyframes bubbleUp {
	0% {
		bottom: 0;
	}

	100% {
		bottom: calc(80% - 260px);
	}
}
</style>
